When the AI detects the player, even for just a brief moment around a corner, it starts firing at a very linear interval without bursts.
It goes like: "DAKK - DAKK - DAKK - DAKK", like a machine working.
It does not feel very humanoid authentic but instead very robotic.
The immersion suffers.
Add variance to the shooting patterns of AI, like bursts, different intevalls and small breaks between the shots.